Version: (using KDE 4.2.0) Installed from: Gentoo Packages Under gentoo, with KDE 4.2 & QT 4.5 do it's unable to enable the desktop effect (with Qt 4.4 all work). I have enable the raster at the compilation.
KWin does not, and will never work with the raster graphics engine. We currently have a hack in trunk though that forces KWin to use the native engine instead.
Then why not show message box like: "Disable raster engine", Raster under windows are not forced? If yes compatibility needed for kwin work under windows.
(In reply to comment #2) > Then why not show message box like: "Disable raster engine", Raster under > windows are not forced? If yes compatibility needed for kwin work under > windows. We cannot add strings to KDE 4.2, so we can't show such a dialog box. We could backport the hack, but I'd say this is something distributions should do. If using Qt 4.5 with KDE 4.2 and building with raster engine than backport.